In the diagram above, |AD| = 10cm, |DC| = 8cm and |CF| = 15 cm. If the area of triangle DCF = 24cm², find the area of the quadrilateral ABCD.

In the diagram above, |AD| = 10cm, |DC| = 8cm and |CF| = 15 cm. If the area of triangle DCF = 24cm², find the area of the quadrilateral ABCD.

A 24cm²
B 48cm²
C 80cm²
D 96cm²
E 120cm²

waec 1991 mathematics

The correct answer is B. 48cm²

Area of \(\Delta\)DCF = 24cm²

Area of Quad= 2 x 24 = 48cm²

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